Q: How is marijuana impairment proven in a California personal injury lawsuit?
California has no per se THC blood limit for drivers, so impairment is established through layered evidence. Blood toxicology results showing active THC metabolites provide a scientific foundation. Drug Recognition Expert testimony documents the officer’s 12-step evaluation. Field sobriety test failures, dashcam footage of erratic driving, and the driver’s own admissions complete the picture. Independent toxicologists can testify about the likely degree of cognitive impairment based on measured THC concentration, documented body weight, and usage history. Experienced California car accident attorneys coordinate all of these experts to build a persuasive, complete case.
Q: Does California’s legalization of recreational marijuana reduce a driver’s civil liability for impaired driving crashes?
No. The legality of purchasing or possessing marijuana in California has no bearing on civil liability for impaired driving. California Vehicle Code § 23152(f) prohibits driving under the influence of any drug regardless of its legal status. A driver who consumed cannabis lawfully purchased at a licensed dispensary and then drove while impaired is just as liable for resulting injuries as a driver who consumed an illegal substance. The legal status of the marijuana itself is entirely irrelevant to civil liability — only the fact of impairment at the time of the crash matters.
Q: How long does a marijuana-impaired driving injury case typically take to resolve in California?
Most marijuana-impaired driving injury cases in California resolve through settlement in 12 to 24 months, though serious injury cases with disputed liability may take longer. Cases that proceed to trial typically take two to three years from the filing date. Key factors affecting the timeline include injury severity and permanence, clarity of the impairment evidence, the number of defendants and insurance carriers involved, and whether the at-fault driver faces parallel criminal proceedings. Compass Law Group pursues efficient resolution without sacrificing full compensation for the sake of speed.
Q: What happens if the marijuana-impaired driver who hit me had no insurance or insufficient coverage?
You may still have significant recovery options. Your own uninsured/underinsured motorist (UM/UIM) coverage can compensate you up to your policy limits when the at-fault driver’s insurance is absent or inadequate. If the driver was operating a vehicle for commercial purposes, their employer’s commercial auto policy may apply. California also allows victims to obtain a personal judgment against the at-fault driver, collectible from future wages and assets. An attorney can evaluate every available source of recovery — including third-party liability theories — during a free initial consultation.




